Product Description:

The 09.F4.C1D-3220 is a frequency inverter from KEB in the F4 Combivert Frequency Inverters series. The device converts fixed-frequency three-phase mains power into a variable-frequency output so that plant controllers can match motor speed to process demand and reduce energy use. Its compact D-size housing saves space inside a control panel. A built-in braking transistor controls the dissipation of regenerative energy during rapid deceleration of the driven machine. Typical applications include pump, fan, and conveyor drives that require consistent torque and smooth acceleration.

The inverter is rated for motors up to 1.5 kW, which is the maximum continuous motor power supported by the unit. At the output terminals, it supplies a nominal current of 7 A and can deliver an apparent power of 2.8 kVA to support inductive loads. The power section accepts a three-phase input voltage of 180 to 260 V in the 230 V class. Within this range, the control electronics maintain a carrier frequency of 4 kHz for pulse-width modulation. The IP20 enclosure blocks access by fingers and solid objects larger than 12.5 mm, but the unit requires installation inside a closed control cabinet for protection from dust and moisture. Compact control mode provides the inverter’s operating functions, while a standard fieldbus slot supports basic network integration.

The drive operates without current derating at ambient temperatures from -10 to 45 °C, supporting use in typical factory conditions. It can function at relative humidity levels of up to 95% when condensation is prevented. The semiconductor layout is designed for the 230 V class, so connected line reactors and filters should match that insulation group. Adequate cabinet ventilation must be provided to remove heat from the compact housing during continuous operation. The surrounding enclosure must also provide the additional protection required for locations exposed to airborne dust or moisture.